+++ /dev/null
-/**
- * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-
-package org.opendaylight.controller.northbound.commons;
-
-import java.util.Dictionary;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Set;
-
-import javax.ws.rs.core.Application;
-import javax.ws.rs.ext.ContextResolver;
-import javax.xml.bind.JAXBContext;
-import javax.xml.bind.JAXBException;
-import javax.xml.bind.annotation.XmlRootElement;
-
-import org.opendaylight.controller.northbound.bundlescanner.IBundleScanService;
-import org.opendaylight.controller.northbound.commons.exception.GenericExceptionMapper;
-import org.opendaylight.controller.northbound.commons.query.QueryContextProvider;
-import org.osgi.framework.Bundle;
-import org.osgi.framework.BundleContext;
-import org.osgi.framework.BundleReference;
-import org.osgi.framework.FrameworkUtil;
-import org.osgi.framework.ServiceException;
-import org.osgi.framework.ServiceReference;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.jaxrs.json.JacksonJaxbJsonProvider;
-
-/**
- * Instance of javax.ws.rs.core.Application used to return the classes
- * that will be instantiated for JAXRS processing. This hooks onto the
- * bundle scanner service to provide JAXB classes to JAX-RS for prorcessing.
- */
-public class NorthboundApplication extends Application {
- public static final String JAXRS_RESOURCES_MANIFEST_NAME = "Jaxrs-Resources";
- public static final String JAXRS_EXCLUDES_MANIFEST_NAME = "Jaxrs-Exclude-Types";
- private static final Logger LOGGER = LoggerFactory.getLogger(NorthboundApplication.class);
- private final Set<Object> _singletons;
-
- public NorthboundApplication() {
- _singletons = new HashSet<Object>();
- _singletons.add(new ContextResolver<JAXBContext>() {
- JAXBContext jaxbContext;
- @Override
- public synchronized JAXBContext getContext(Class<?> type) {
- if (jaxbContext == null) {
- jaxbContext = newJAXBContext();
- }
- return jaxbContext;
- }
-
- } );
- _singletons.add(getJsonProvider());
- _singletons.add(new JacksonJsonProcessingExceptionMapper());
- _singletons.add(new QueryContextProvider());
- _singletons.add(new GenericExceptionMapper());
- }
-
- ////////////////////////////////////////////////////////////////
- // Application overrides
- ////////////////////////////////////////////////////////////////
-
- @Override
- public Set<Object> getSingletons() {
- return _singletons;
- }
-
- @Override
- public Set<Class<?>> getClasses() {
- Set<Class<?>> result = new HashSet<Class<?>>();
- result.addAll(findJAXRSResourceClasses());
- return result;
- }
-
- private static final JacksonJaxbJsonProvider getJsonProvider() {
- JacksonJaxbJsonProvider jsonProvider = new JacksonJaxbJsonProvider();
- jsonProvider.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES,
- false);
- return jsonProvider;
- }
-
- private BundleContext getBundleContext() {
- ClassLoader tlcl = Thread.currentThread().getContextClassLoader();
- Bundle bundle = null;
-
- if (tlcl instanceof BundleReference) {
- bundle = ((BundleReference) tlcl).getBundle();
- } else {
- LOGGER.warn("Unable to determine the bundle context based on " +
- "thread context classloader.");
- bundle = FrameworkUtil.getBundle(this.getClass());
- }
- return (bundle == null ? null : bundle.getBundleContext());
- }
-
- private static final IBundleScanService lookupBundleScanner(BundleContext ctx) {
- ServiceReference<?> svcRef = ctx.getServiceReference(IBundleScanService.class);
- if (svcRef == null) {
- throw new ServiceException("Unable to lookup IBundleScanService");
- }
- return IBundleScanService.class.cast(ctx.getService(svcRef));
- }
-
- private final JAXBContext newJAXBContext() {
- BundleContext ctx = getBundleContext();
- IBundleScanService svc = lookupBundleScanner(ctx);
- try {
- List<Class<?>> cls = svc.getAnnotatedClasses(ctx,
- new String[] { XmlRootElement.class.getPackage().getName() },
- parseManifestEntry(ctx, JAXRS_EXCLUDES_MANIFEST_NAME),
- true);
- return JAXBContext.newInstance(cls.toArray(new Class[cls.size()]));
- } catch (JAXBException je) {
- LOGGER.error("Error creating JAXBContext", je);
- return null;
- }
- }
-
- private final Set<Class<?>> findJAXRSResourceClasses() {
- BundleContext ctx = getBundleContext();
- String bundleName = ctx.getBundle().getSymbolicName();
- Set<Class<?>> result = new HashSet<Class<?>>();
- ServiceException recordException = null;
- try {
- IBundleScanService svc = lookupBundleScanner(ctx);
- result.addAll(svc.getAnnotatedClasses(ctx,
- new String[] { javax.ws.rs.Path.class.getName() },
- null, false));
- } catch (ServiceException se) {
- recordException = se;
- LOGGER.debug("Error finding JAXRS resource annotated classes in " +
- "bundle: {} error: {}.", bundleName, se.getMessage());
- // the bundle scan service cannot be lookedup. Lets attempt to
- // lookup the resources from the bundle manifest header
- for (String c : parseManifestEntry(ctx, JAXRS_RESOURCES_MANIFEST_NAME)) {
- try {
- result.add(ctx.getBundle().loadClass(c));
- } catch (ClassNotFoundException cnfe) {
- LOGGER.error("Cannot load class: {} in bundle: {} " +
- "defined as MANIFEST JAX-RS resource", c, bundleName, cnfe);
- }
- }
- }
-
- if (result.size() == 0) {
- if (recordException != null) {
- throw recordException;
- } else {
- throw new ServiceException("No resource classes found in bundle:" +
- ctx.getBundle().getSymbolicName());
- }
- }
- return result;
- }
-
- private final Set<String> parseManifestEntry(BundleContext ctx, String name) {
- Set<String> result = new HashSet<String>();
- Dictionary<String,String> headers = ctx.getBundle().getHeaders();
- String header = headers.get(name);
- if (header != null) {
- for (String s : header.split(",")) {
- s = s.trim();
- if (s.length() > 0) {
- result.add(s);
- }
- }
- }
- return result;
- }
-
-}
Code Review / controller.git / blobdiff